Gutter oil is used as a regenerant for aged asphalt,the regeneration performance of aged asphalt and pavement per-formance of cold recycled asphalt mixture were studied by three indexes of recycled asphalt,splitting strength,immersion marshall and four-point bending fatigue test of recycled asphalt mixture.The results show that the performance index of reclaimed asphalt was basically restored to the performance requirement of 70# matrix asphalt,when the waste oil content is 15％.At the same as-phalt milling material,as the amount of gutter oil increased,the properties of cold recycled asphalt mixture with different asphalt milling material content had the same change trend,mechanical properties,low temperature properties and water stability properties were gradually improved,the high temperature stability decreased,fatigue life first decreased and then increased.Under the same amount of gutter oil,with the increase of asphalt milling material,the mechanical properties,low temperature properties and water stability were decreased,high temperature stability increased,fatigue life became shortened.
关键词
地沟油/老化沥青/沥青铣刨料/冷再生沥青混合料/路用性能/疲劳寿命
Key words
gutter oil/aged asphalt/asphalt milling material/cold recycled asphalt mixture/road performance/fatigue life
维普
万方数据